Vulcans - Members of the
United Federation of Planets on the 23rd century sci-fi series
STAR TREK/NBC/1966-69.

The Vulcans live on a deep-red colored
Class-M planet whose bright sun creates surface temperatures of
140 degrees. Humanoid in appearance, they differ in many ways from
humans including their pointed ears; green tinted skin-due to
their copper based blood; a heart located where a human liver
would be; the ability to read minds and emotions via a
mind-melding technique; and a body physically stronger than
earthlings (they used a nerve pinch to incapacitate their
victims). The Vulcans, once a warlike race of barbarians, caste
aside emotion for the purity of logic.

TRIVIA NOTE: In 1845 Urbain Jean Joseph Leverrier
speculated that a planet existed between Mercury and the sun when
he detected perturbations in Mercury's orbit that suggested a
gravitational tug of another heavenly body which was dubbed
"Vulcan." Years later Einstein's Theory of Relativity explained
the irregularities away. See also - "Sarek"
and "Spock"